Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium EasyToFix
New issue 2958 by ness...@gmail.com: Implement series expansions
error_functions.py
http://code.google.com/p/sympy/issues/detail?id=2958
Series expansions about finite points work for the trigonometric integrals
Si, Ci, etc. They are not implemented/tested for exponential integrals E1,
Ei, expint. It would be necessary to figure out where reasonable series
expansions exist and see if sympy produces them; if not why not. This
should not be hard.
Additionally, for limits we need to implement asymptotic series (that
is, "series expansions around infinity") and, in cases where there are
essential singularities at infinity, helpers which expose these in terms of
exponential functions (c/f the rewrite_as_tractable implementation in
gammazeta.py). This might be somewhat harder.
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